超临界二氧化碳与液态金属耦合换热特性研究进展  

Research progress on conjugated heat transfer between supercritical carbon dioxideand liquid metals

作　　者：雷贤良[1] 刘清江 刘书涵 方寅 王海军[1] 崔大伟 张一帆[3] LEI Xianliang;LIU Qingjiang;LIU Shuhan;FANG Yin;WANG Haijun;CUI Dawei;ZHANG Yifan(State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China;China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen 518000,China;Xi'an Thermal Power Research Institute Co.,Ltd.,Xi'an 710054,China)

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049 [2]中广核研究院有限公司,广东深圳518000 [3]西安热工研究院有限公司,陕西西安710054

出　　处：《热力发电》2023年第6期1-11,共11页Thermal Power Generation

基　　金：国家自然科学基金项目(U1867218);中国华能集团有限公司总部科技项目(HNKJ20-H87-04)。

摘　　要：液态金属快堆/太阳能光热系统与超临界二氧化碳(S-CO_(2))布雷顿循环发电系统深度融合,必将引领能源动力领域革命性发展。由于液态金属与S-CO_(2)的特殊物理性质,液态金属普朗特数远低于常规流体,S-CO_(2)的物理性质奇异性变化,其流动换热特性与常规流体存在显著差别,其流动与传热机理比较复杂,耦合传热机理尚不明朗。本文归纳总结了国内外关于S-CO_(2)、液态金属、耦合换热与耦合换热器在实验、数值模拟、传热预测模型的主要研究成果,指出液态金属与S-CO_(2)流动换热及其耦合传热研究中存在的问题,为先进动力循环系统以及多工质耦合动力系统的设计和安全运行提供参考依据。Liquid metal fast reactor/concentration solar power system coupled with supercritical carbon dioxide(S-CO_(2))Brayton cycle power system will surely lead the revolutionary development in the field of energy and power in future.Due to the special properties of liquid metal and S-CO_(2),the Pr number of liquid metals is low;the physical properties of S-CO_(2) steep varies in the pesudocrtical region,thus its flow and heat transfer characteristics are different from those of conventional fluids,their heat transfer mechanism is relatively complex,and the conjugated heat transfer mechanism is not clear.This study summarizes the main research results of supercritical CO_(2),liquid metal,conjugated heat transfer and conjugated heat exchanger at home and abroad in experiments,numerical simulation and prediction models,points out the problems in the research of CO_(2),liquid metals and their conjugating heat transfer between the two fluids,the discussion can provide valuable reference for the design and safe operation of advanced power cycle and multiple working fluids coupling power systems.

关 键 词：液态金属 超临界二氧化碳 流动换热 铅冷快堆 钠冷快堆 太阳能光热 

分 类 号：TL433[核科学技术—核技术及应用] TL33